(11x^2+8x-11)+3(-4x^2-2x-2)=

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Solution for (11x^2+8x-11)+3(-4x^2-2x-2)= equation:


Simplifying
(11x2 + 8x + -11) + 3(-4x2 + -2x + -2) = 0

Reorder the terms:
(-11 + 8x + 11x2) + 3(-4x2 + -2x + -2) = 0

Remove parenthesis around (-11 + 8x + 11x2)
-11 + 8x + 11x2 + 3(-4x2 + -2x + -2) = 0

Reorder the terms:
-11 + 8x + 11x2 + 3(-2 + -2x + -4x2) = 0
-11 + 8x + 11x2 + (-2 * 3 + -2x * 3 + -4x2 * 3) = 0
-11 + 8x + 11x2 + (-6 + -6x + -12x2) = 0

Reorder the terms:
-11 + -6 + 8x + -6x + 11x2 + -12x2 = 0

Combine like terms: -11 + -6 = -17
-17 + 8x + -6x + 11x2 + -12x2 = 0

Combine like terms: 8x + -6x = 2x
-17 + 2x + 11x2 + -12x2 = 0

Combine like terms: 11x2 + -12x2 = -1x2
-17 + 2x + -1x2 = 0

Solving
-17 + 2x + -1x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
17 + -2x + x2 = 0

Move the constant term to the right:

Add '-17' to each side of the equation.
17 + -2x + -17 + x2 = 0 + -17

Reorder the terms:
17 + -17 + -2x + x2 = 0 + -17

Combine like terms: 17 + -17 = 0
0 + -2x + x2 = 0 + -17
-2x + x2 = 0 + -17

Combine like terms: 0 + -17 = -17
-2x + x2 = -17

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -17 + 1

Reorder the terms:
1 + -2x + x2 = -17 + 1

Combine like terms: -17 + 1 = -16
1 + -2x + x2 = -16

Factor a perfect square on the left side:
(x + -1)(x + -1) = -16

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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